I have written 4 short papers;
the first explaining how to combine mass in series and in parallel, like 1kg + 1kg = 2kg but also like 1kg + 1kg = 1/2kg.
the second describing how to increase momentum or charge in a system
the third shows a template on how to compare harmonic systems, their variables and equations, like a mass-spring system with a coil-cap system
the forth, which i believe is the most promising, uses the second and the third paper to show how to increase magnetic flux
https://sites.google.com/site/nilrehob/home/elementary-physics
/Hob
We have a new paper out, its the 5th and its called "Increasing Electromagnet Force".
It focus on the force per power ratio in coils.
Since the concept of an electromagnet is present in both motors and generators we find it interesting to study the relationship between the parameters describing the electrical power the coil consumes and the mechanical force with which the coil attracts a piece of ferromagnetic material or a magnet.
The amount of copper in an electromagnet determines the force per power ratio, not the number of turns or the wire thickness in the coil, the more copper the greater force.
To get the best performance in an electromagnet it should be as big as possible, which leads us to believe that motors should have as few and big coils as possible (think Joseph Newman) to increase torque per power. We also believe that the reverse is true, that generators should have as many and small coils as possible to decrease torque per power.
You can find all papers here:
https://sites.google.com/site/nilrehob/home/elementary-physics
/Hob
I also did a short video on the subject of the 5th paper:
https://www.youtube.com/watch?v=IIeRR6NjMPQ
/Hob
/Hob
your Video shows a big Exclamation point here [No Vid]
Northeast USA
thanks for sharing your hard work.
Chet
Quote from: ramset on November 20, 2015, 09:04:33 AM
/Hob
your Video shows a big Exclamation point here [No Vid]
Northeast USA
thanks for sharing your hard work.
Chet
Really? Try again, its hyper fresh, maybe internet isn't that fast after all?
/Hob
Working now
https://www.youtube.com/watch?v=IIeRR6NjMPQ
Thanks
Chet
Please be aware that all previous papers have been updated,
I'm not sure if I should re-upload them here,
but you find them all at:
https://sites.google.com/site/nilrehob/home/elementary-physics
/Hob
Thanks for making a video demo Hob
Interesting and useful information to know
Luc
Quote from: gotoluc on November 20, 2015, 03:26:01 PM
Thanks for making a video demo Hob
Interesting and useful information to know
Luc
Thanks, and yeah I think its vital info.
We'll see what comes out of it.
:-)
/Hob
Does anyone know if there is a limit to how much you can upload to this site?
I'm asking if I should upload updates to my papers here or not.
/Hob
Quote from: nilrehob on November 20, 2015, 03:33:49 PM
Does anyone know if there is a limit to how much you can upload to this site?
I'm asking if I should upload updates to my papers here or not.
/Hob
I've been uploading stuff (at this site) for years and never had any limit problems. I know it's an issue at EF but not here.
Luc
Quote from: gotoluc on November 20, 2015, 03:49:27 PM
I've been uploading stuff (at this site) for years and never had any limit problems. I know it's an issue at EF but not here.
Luc
Ok, then I'll upload them all here once in while when they have been updated, like now; my first 4 papers freshly updated are attached.
The 5th paper is in a post above.
/Hob
Read the fine print:
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(Just under the "Attach:" window when you are entering a reply.) Note that the forum sometimes has trouble with .zip format files, and that .bmp images are _not_ allowed.
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Quote from: TinselKoala on November 21, 2015, 02:46:09 PM
Read the fine print:
(Just under the "Attach:" window when you are entering a reply.) Note that the forum sometimes has trouble with .zip format files, and that .bmp images are _not_ allowed.
If you upload inline images please try to keep the physical size under 1024 pixels wide. Larger widths will run off the page and screw up the page formatting.
Thanks!
/Hob
Hi Hob,
Thanks for the paper, interesting read. I have not seen such conclusion as the amount of copper determines the force per power ratio, it includes more things than the length of the wire, this latter was known of course as the more turns (i.e the higher inductance), the more force.
Would like to read your opinion on the following winding method I think I read it from member wattsup long time ago.
It involves a multilayer coil, say when the first layer is finished, you do not continue the winding backwards to make the second layer but you bring back the wire straight to and above the start of the first layer and you make the second layer in the same winding direction as the first layer was wound. Then finishing the second layer, you bring back the wire straight again to and above the start of the second layer and make the third layer in the same winding direction as the second (and of course the first) layer was. And so on and on with the rest of the layers if needed. No any other special requirement on the shape, sizes etc of the coil wound this way was mentioned.
Can you judge whether there would be any advantage in using such winding method? I have not tested this, just occured to me that you or your colleague may have some info on this, or just a gut feeling? 8)
Thanks,
Gyula
Quote from: nilrehob on November 20, 2015, 08:05:57 AM
We have a new paper out, its the 5th and its called "Increasing Electromagnet Force".
It focus on the force per power ratio in coils.
Since the concept of an electromagnet is present in both motors and generators we find it interesting to study the relationship between the parameters describing the electrical power the coil consumes and the mechanical force with which the coil attracts a piece of ferromagnetic material or a magnet.
The amount of copper in an electromagnet determines the force per power ratio, not the number of turns or the wire thickness in the coil, the more copper the greater force.
To get the best performance in an electromagnet it should be as big as possible, which leads us to believe that motors should have as few and big coils as possible (think Joseph Newman) to increase torque per power. We also believe that the reverse is true, that generators should have as many and small coils as possible to decrease torque per power.
You can find all papers here:
https://sites.google.com/site/nilrehob/home/elementary-physics (https://sites.google.com/site/nilrehob/home/elementary-physics)
/Hob
Quote from: gyulasun on November 21, 2015, 04:53:17 PM
Hi Hob,
Thanks for the paper, interesting read. I have not seen such conclusion as the amount of copper determines the force per power ratio, it includes more things than the length of the wire, this latter was known of course as the more turns (i.e the higher inductance), the more force.
Would like to read your opinion on the following winding method I think I read it from member wattsup long time ago.
It involves a multilayer coil, say when the first layer is finished, you do not continue the winding backwards to make the second layer but you bring back the wire straight to and above the start of the first layer and you make the second layer in the same winding direction as the first layer was wound. Then finishing the second layer, you bring back the wire straight again to and above the start of the second layer and make the third layer in the same winding direction as the second (and of course the first) layer was. And so on and on with the rest of the layers if needed. No any other special requirement on the shape, sizes etc of the coil wound this way was mentioned.
Can you judge whether there would be any advantage in using such winding method? I have not tested this, just occured to me that you or your colleague may have some info on this, or just a gut feeling? 8)
Thanks,
Gyula
My gut feeling is that directional-winded coils does not matter if used as an electromagnet, but if you pulse it i'm sure it makes a difference. Im pretty confident the original equation F = ... Nˆ2 Iˆ2 A holds. I have just rearranged it trying to make real world sense to it.
/Hob
Hi Hob,
Okay, thanks for your answer.
Gyula
Minor changes to paper 1-4,
paper 5 had the experiment redone with more coils.
/Hob
There is a new version of paper 5 out with added sections.
Paper 1-4 have only minor changes.
You find them at:
https://sites.google.com/site/nilrehob/home/elementary-physics
If anyone would like to help with spelling, grammar, wording, content, whatever,
please go to github and contribute:
https://github.com/boherlin/elementary-physics
We have also made a bitcoin-account for donations.
But we're not sure its working, no donations yet..
If anyone could send a tiny-weeny satoshi we would be thrilled.
Account number at the end of the papers.
/Hob
Ouch, fixed a big error in ch 5, another version is out,
interesting how some errors only get caught after it gets public.
/Hob